Windmill-derrick



(No Model.) 2 Sheets-Sheet 1; I

G'. H. BROWN.

WINDMILL DERRICK.

Patented Apr. 18, 1893.

WITA/ESSES: JNVENTOR,

A TTORNE Y3 ENE WE L L m GI w (No Model.)

No. 495,662. Patented A r. 18, 18.93.

INVENTOR. W

ATTOTQE E I V] TAESSES UNITED STATES PATENT OFFICE.

GILBERT H. BROWN, OF DAYTON, OHIO.

WINDMILL-DERRICK.

SPECIFICATION forming part of Letters Patent No. 495,662, dated April18, 1893.

Application filed February 10, 1893. Serial No. 461,714.- (No model.)

To all whom it may concern..- H

Be it known that I, GILBERT H. BROWN, of Dayton, county of Montgomery,State of Ohio, have invented a new and useful Improvement inlVindinill-Derricks, of which the following is a specification.

My invention relates to new and useful improvements in windmill derricksor tilting towers for wind wheels.

The object of the invention is to provide a windmill tower having aconsiderable reduction in weight as compared to a construction whereinthe tower consists partially or wholly of numerous braces, cross rods,850., throughout its length; a tower, which, when elevated to aserviceable position, offers only a minimum resistance to the air; thisobject I accomplish by providing a tower consisting of a tubular shafthaving its braces and fulcrum nearits lower extremity,on a groundderrick, by means of which it may be easily lowered from a vertical to ahorizontal position for needed repairs; to oil the wheel gearing, orwhen it becomes necessary to protect the device from disastrous weather.

A further object is to construct the base of the tower so that thenecessary ballast may be applied thereto to counter-balance the weighton the upper portion of' the tower, after shipment and when the same isin the hands of the consumer, thereby greatly decreasing the weight andconsequently the cost of transportation.

A further object of my invention is to provide a tilting tower oftubular iron with the pumping rod connected and running through saidtower, and that may be manipulated without having to disconnect thepumping rod whenever it becomes necessary to lower the same. Otherpoints will be mentioned in the specification and the essential featuresembraced in the claims.

The drawings herewith presented are referred to as follows: Figure 1. isa side elevation showing my improved windmill tower and derrick with awind wheel on the top thereof. The dotted lines show the positionassumed when the tower is lowered. Fig. 2. is a front elevation, with aportion of the top of the tower broken, and the upper end of the pumprod exposed, also broken off. Fig. 3. a plan view showing the towerlowered upon the derrick, to a horizontal position, the tubular portionof the tower, together with the pump rod, is broken off. The spring barsn n are shown in broken lines in this View. Fig. ta transverse sectionof the base anywhere near the center thereof, showing the same to be ofhollow structure.

The letters representing the different parts will be found to refer tothe same parts throughout the different views.

A indicates the floor or foundation to which are secured uprightstandards a-a and inclined braces 17 and b therefor. These parts may beconstructed of metal or wood, provided the latter has suflicientstrength to withstand the strain incident thereto.

B indicates the base or lower part of the tower with projections orwings c terminating in trunnions a a by means of which the tower isprovided with a fulcrum in the upright standards aa. The base and wingsare integral parts; the former portion being constructed with a hollowinterior 6, and a longitudinal channel e as shown in Figs. 2 and i; thepurpose of the hollow space thus provided, is for the introduction ofballast through the doors ff, such as sand or other weighty substance,more or less of which may be placed therein, according to the weight ofthe wheel and other top connections, for the purpose ofcounter-balancing the same. This ballast, it will be understood, is tobe placed in the base, when the mill is being or has been placed in anoperative position. The upper or tubular portion of the tower B isrigidly attached to the base in any suitable way. The pumping rod dpenetrates the tower vertically through the channel 6' and is providednear the upper terminal of said channel with a knuckle joint (1 whichpermits the tower to be tilted without being obliged to uncouple ordisconnect the pump rod, in a way that will be readily understood. I

f and f indicate pulleys pivoted to the floor A.

The letter 9 denotes a transverse shaft pivoted in the brace rods b withgear wheels 9 and g on the ends thereof, and winding spools h, h and kchains 'i. 2'. or other similar means are secured to the base A, andpassed around the pulleys f and f A second chain c is secured to thetower and adapted to be wound on spool h in an opposite direction to thewinding of chains t. 21, the object of this chain 7/ is to acceleratethe movement when it is des1red to remove the tower from a vertical to ahorizontal position. The shaft supporting the spools is rotated by meansof the winding crank lo pivoted to the inclined brace, and provided witha pinion is adapted to mesh with the gear wheel 9, and thus the towermaybe lowered or elevated as the case may be; a similar pinion kequalizes the bearing of shaft g. Upon belng lowered to a horizontalposition, the tower and upper portion of the pump rod assume a positionat right angles to that portIOH Of the pump rod below the knuckle joint,by providing the slot 6'. The tower is maintamed in a vertical positionby means of stops at and n, and the spring bars n and 'n, these springbars are rigidly attached to the floor A at one end, the other endterminating downwardly at right angles, and adapted to enter openings inthe floor when the springs are pressed downwardly by means of the footlever, o, to which pressure may be conveniently applled whenever itbecomes necessary to lower the tower by removing the base thereof frombetween the ends of the spring bars n n and the stops at and n where itis held sescurely when the tower is in a vertical posiion.

Having described my invention, I claim as new and desire to secure byLetters Patent 1s 1. In a windmill derrick, a tower provided with anenlarged base with a hollow interior, a vertical channel extendinglongitudinally through one side of the base and openings for theintroduction of ballast, substantially as described.

2. In a windmill derrick, the combination with a pump rod adapted tovibrate by means of a oint therein, of a tower, the lower extremityof'which is provided with an enlarged base having a fulcrum on uprightbearings; sald base having a longitudinal channel extending through oneside thereof in which the joined portion of the pnnip rod is permittedto vibrate, said base also having a hollow interior adapted to holdballast, whereby the weight on the upper portion of the tower is counter-balanced, substantially as described.

3. In a windmill derrick, the combination of a hollow shaft, one end ofwhich is adapted to receive a wind wheel, the other end provided with anenlarged hollow base, with a longitudinal channel therein and the doorsff, upright standards having braces attached thereto, a transverse shaftpivoted to two of said braces, a Winding crank, intermeshing gearingbetween said crank and transverse shaft, chain connections between thebase and tubular portions of the tower, and the winding mechanism,substantially as described.

4. In a windmill derrick, the combination of the wind wheel shaft hereindescribed adapted to receive ballast at one end to maintain the same inequipoise, the fulcrum provided therefor by means of theuprightstandards a-a, secured to the supporting frame by the braces band b, the shaft g with gear wheels g and g the winding crank withpinion k and means for connecting the base and said wind wheel shaftwith the winding mechanism, substantially as described.

5. In a windmill derrick, the combination of the hollow shaftterminating at its lower extremity in a rectangular base having a hollowinterior and a longitudinal channel and a fulcrum on upright standardssecured to the supporting frame, means for locking said shaft in avertical position consisting of stops nn and the spring bars 'n and 'n,substantially as herein described.

In testimony whereof I have hereunto set my hand this 26th day ofJanuary, 1893.

GILBERT H. BROWN.

